Apparatus for leak testing a fluid containing chamber

Details Apparatus for leak testing a fluid containing chamber Apparatus for leak testing a fluid containing chamber

1989-04-17

1990-05-15

Williams, Hezron E.

Measuring and testing

With fluid pressure

Leakage

73 414, G01M 310

Patent

active

049246941

ABSTRACT:
A method and apparatus is disclosed for leak testing a fluid containing chamber wherein the chamber is pressurized with a gas and is submerged in liquid. The bubbles of gas rising from the submerged chamber are directed past a plurality of predetermined locations which are each in communication with a photoelectric detector. The electrical signals from the photoelectric detectors are counted and when the number of bubbles exceeds a predetermined number, a fault signal is activated indicating a leaking container. By grouping a number of adjacent photocells into a predetermined set, the apparatus can discriminate between random bubbles rising from the chamber as it is submerged, and a number of bubbles all originating from a given location. The photoelectric detectors may be positioned in the liquid adjacent the predetermined locations or positioned out of the liquid and coupled to the predetermined locations by fiber optic cables.

REFERENCES:
patent: 2408202 (1946-09-01), Dickman
patent: 3516284 (1970-06-01), Lockard
patent: 3590256 (1971-06-01), Neeff

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